Home / 3,130.72-4,695.26-938.86

Finding the Fourth Proportional to 3,130.72, 4,695.26 and 938.86

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Solution

The fourth proportional to 3,130.72, 4,695.26 and 938.86 is: 1,408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.72 : 4,695.26 = 938.86 : x
  2. Step 2: Convert to fraction form
    3,130.72/4,695.26 = 938.86/x
  3. Step 3: Cross multiply
    3,130.72x = 4,695.26 × 938.86
  4. Step 4: Simplify right side
    3,130.72x = 4,408,191.80
  5. Step 5: Solve for x
    x = 4,408,191.80/3,130.72
  6. Step 6: Final answer
    x = 1,408.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.